Improvement in direct steam-pumps



UNITED STATES PATENT (DEEIcEr BENJAMIN C. VANDUZEN, OF CINCINNATI, OHIO.

IMPROVEMENT IN DIRECT STEAM-PUMPS.

Specification forming part of Letters PatentNo. 155,477, dated September29, 1874 application Bled July l, 1874.

To all whom it may concern Be it known that I, BENJAMIN C. VANDU- ZEN,of Cincinnati, Hamilton county, State of Ohio, have invented a certainnew and useful Improvement in Direct Steam-F umps, of which thefollowing is a specication:

My invention relates to the class of pumps in which the steam actsdirectly upon, and is in contact with, the upper surface ofthe body ofwater to be forced; and it consists, rst, in a peculiar construction ofsteamvalve and seat, by which steam is automatically admitted to thesurface of the water to be forced, when the chamber containing the wateris sufficiently full, and is automatically shut off when the Water hasbeen forced to the lowest level, and it is necessary to produce a vacuumto enable the suction-water to refill the chamber; second, in thepeculiar construction of the water-chamber, and combination with anannular chamber exterior to it, by the combined operation of which amore perfect vacuum is produced than is possible with direct steam-pumpsheretofore used.

Figure 1 is a perspective view of a pump embodying` my invention. Fig. 2is an axial section of the same.

A is the chamber in which the forcing is done, the lower edge of thecone being the lowest level of the water in operation. B is the suctionor supply pipe, fitted with the customary valve C. D is thedischarge-pipe, titted with the usual check-valve C. Entirely aroundthis chamber A I provide ali-annular chamber, E, so that the lower edgeof the cone may be exposed to the water exteriorly as well asinteriorly. F is the steam -valve cage or chamber. It is bored,cylindrically, of different diameters, as shown, and has threevalveseats, f f f. The steam-valve Cr is made to match. Its upper collarg seats on the seat f; its upper central projection g seats up againstthe seat f, and its lower shoulder g seats on the seatf. The valve G ishollow for the major part of its length, and is perforated at g3, forthe passage of steam below the valveface. An air-valve, H, openinginwardly, supplies sufficient air, during the time the vacuum in thepump is generated, to cushion the inwardly-flowing water, and preventits concussive or ramming action.

In the operation of the pump, after it has been properly primed, steamis admitted at pipe J, and, owing to natural leakage between thecylindrical valve and itscharnber below the seat ff, the valve-face g isacted upon by the pressure, and the valve Gr is thereby raisedsufficiently to admit steam at the perforations g3 into cylinder A. Bythe pressure of steam y upon the water in the chamber the water is thenforcibly ejected through valve C, the chamber E being in this operationfull of water. When the water originally in the chamber A has beenforced out, so that its level is just below the lower edge of the coneA, the steam passes this edge entirely around the circle, and bubbles upinto the chamber E, and causes the water in the latter to spout in anagitated manner into the chamber A, the effect of which is to cause thesteam to condense in chamber A, and the valve Gr to fall by its gravity,and the presence of a vacuum below the valve. Until this vacuum takesplace the steam -pressure admitted to the interior of valve G and loweredge is sufficient to support it against its gravity and otherinfluences.

It will thus be seen that ,the valve has an entirely automatic action,to admit and shut off steam at the proper times, and that, owing to thepresence of the annular chamber E, and the consequent exposure of theentire lower edge of the cone A, the creation of a vacuum, when thewater has reached this lower edge, is so decisive and immediate thatunnecessary use of steam is prevented, the valve G being instantlyclosed.

In order to render the pump continuous in its action, I make the pumpdouble, treble, or as powerful as necessary for different kinds of work.

I claim- 1. The chamber' E, in combination with the chamber F, havingvalveseats f f', the cap having valve-seat f, and the valve G, havingfaces g g g" and perforations g3, substantially as specified.

2. In combination with the cone A, the annular chamber E, operatingsubstantially as and for the purpose specified.

In testimony of which invention I hereunto set my hand.

BENJAMIN C. VANDUZEN.

Witnesses R. M. HUNTER, J. L. WARTMANN.

